157945 has 8 divisors (see below), whose sum is σ = 195840. Its totient is φ = 122160.

The previous prime is 157933. The next prime is 157951. The reversal of 157945 is 549751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 157945 - 2⁹ = 157433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355 + ... + 664.

It is an arithmetic number, because the mean of its divisors is an integer number (24480).

2¹⁵⁷⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

157945 is a deficient number, since it is larger than the sum of its proper divisors (37895).

157945 is a wasteful number, since it uses less digits than its factorization.

157945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055.

The product of its digits is 6300, while the sum is 31.

The square root of 157945 is about 397.4229485070. The cubic root of 157945 is about 54.0549281052.

The spelling of 157945 in words is "one hundred fifty-seven thousand, nine hundred forty-five".